Is y= 2x cubed +6 linear or non-linear

How can the correlation in the scatter plot graph below best be described? positive correlation negative correlation both positive and negative no correlation

Runner ran 1 4/5 miles on monday and 6 3/10 on tuesday. how many times her monday’s distance was her tuesdays distance

Marcus and cody both leave the park at the same time, but in opposite directions. if cody travels 6 mph faster than marcus and after 4 hours they are 64 miles apart, how fast is each traveling? solve using rare times time = distance.